Tuck-creaser for sewing-machines.



No. 665,522. Patented Ian. 8,'|90l. J. M. GBEIST.

TUCKQGREASEB FOB SEWING MACHINES.

(Application filed Apr. 26, 1900.)

(No Model.)

W'JTNESSES:

UNITED STATES PATENT CFFICE.

JOHN M. GREIST, OF NEW HAVEN, CONNECTICUT.

TUCK-CREASER FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 665,522,dated J 1901;

Application filed April 26, 1900. Serial No. 14,411. (No model.)

To all whom it may concern:

Be it known that 1, JOHN M. GREIST, a citizen of the United States,residing at New Haven, in the county of New Haven and State ofConnecticut, have invented certain new and useful Improvements inSewing-Machine Tuck-Creasers, of which the following is a specification,reference being bad therein to the accompanying drawings.

This invention relates to that class of sewing-machine tuck creasers ormarkers adapted to be attached to the presser-bar of a sewing-machine inplace of the ordinary presserfoot and in which the creasing of the workis effected by a vibrating arm operated from the needle-bar of themachine in codperation with a lip or projection upon which the worklies, the invention having for its object to provide a creasingattachment of the class referred to which is simple and compact inconstruction and in which the vibrating creasing-arm will be properlycushioned, so that the movements of the needle-bar may be impartedthereto in a smooth and easy manner, thereby avoiding any harsh contactsbetween the operating parts, as Well as providing for a proper yieldingaction of the creasing-arm upon the goods. The invention also provides aconvenient means for throwing the creaser out of action when desired.

In the accompanying drawings, Figure l is a perspective view of theimproved creaser or marker. Fig. 2 is a plan view, and Fig. 3 an endview, of the same looking from the left of Fig. 2. Fig. 4 is across-section on line 4 4 of Fig. 2 looking in the direction of thearrows adjacent to said line. Fig. 5 is a view similar to Fig. 4,illustrating a slight modification. Fig. 6 is a bottom view of theattachment. Fig. 7 is a detail view of the frame of the attachment; Fig.8, a detail view of the part thereof which carries the creasing members;and Fig. 9, a detail view of the guide, which serves also as a steadyingde vice for the adjustable part carrying the creasing members.

In the drawings, A denotes the foot portion of the attachment, adaptedto be secured to the resser-bar of a sewing-machine and taking the placeof the ordinary presser-foot, the said foot A being provided with anintegral lateral extension or arm at, these two parts constituting theframe of the attachment.

B denotes a base-plate carrying the creasing devices, consisting in thepresent instance of a vibrating arm b, having a right-angular part b,which serves as a pivot for said arm, the said pivot being held betweenan ear b formed at the rear end of the plate B, and an upwardly-turnedrear end portion 0 of the work-holding spring 0', beneath which the workpasses and which is riveted at its rear end to the plate B. Thedownwardly-turned forward end of the creasing-arm b is notched forcodperation in the creasing operation with an upturned lip b lyingbeneath the notched end of the said arm. The plate B is provided with asteadying arm 5 adapted to rest against the part a of the frame of theattachment, said arm 17 being jointed to the plate B by thelaterally-extending portion b of the said plate B.

D is an edge-guide for the Work to determine the width of the tuck to besewed, said edge-guide being part of a skeleton plate, one arm d ofwhich is provided with two hooks 01, adapted to overlap the arm orportion a of the frame, and thus steady the adjustable guide on saidframe. The said arm dis also provided with an index-fingerd Thebaseplate B of the marking members extends through an opening OZ in theguide, the latter serving, in cooperation with the arm 19 on the plateB, to steady the said plate B as it is adjusted toward and from theneedle to vary the distance apart of the creases for the tucks to beformed.

Overlying the laterally-extending arm a of the frame of the attachmentand also overlying the hooks d of the skeleton guide-plate and the arm bof the base-plate B is a clamping cap-plate E, having at its rear end alug or projection e, entering an aperture a in an upturned lip of at theend of the arm a of the frame, the said cap-plate being held in place bythe set-screw f, tapped in the arm a, so that when the said set-screw istightened the cap-plate will be clamped against the ears (1 of the plate(1 and also against the arm b of the plate B and will thus serve tosecurely bind all of the parts together; but when the said set-screw isloosened the plate B may be adjusted longitudinally of the attachment tovary the spacing of the creases for the tucks, and the guide D will alsobe free to be adjusted to vary the width of the tucks. The cap-plate Eis formed with downturned lips at its sides (see Figs. 1 and 4) and alsowith a downturned lip at its forward end, (see Fig. 1,) and thus servesnot only as a clampingplate, but as a housing to cover and inclose theparts beneath it and give a finished and neat appearance to theattachment. The capplate E is provided with a graduated scale 6',adjacent to which is an index 12 movable with the plate B, and the saidcap-plate is also provided with a second graduated scale a, adjacent towhich is the-index-finger d adjustable with the guide D.

The foot portion A of the attachment is provided with a smallright-angular bracket g, which serves as a pivot for the operatingleverG, which is arranged transversely of the attachment and which preferablyconsists of two parts g and yieldingly connected, the said part 9'having the upwardly-extending portion g beneath the upper part of whichand the arm g is interposed a coil-spring g. The part g of the lever Grests upon the creasing-arm b, and the creasing attachment is so locatedthat a screw or other projection on the needle-bar of the sewing-machinecomes into an easy sliding contact with the inclined upwardlyextendingpart g of the part g and through the coil-spring g forces the partgyieldingly downward against the said creasing-arm, thus causing thenotched downturned end of said arm to crease the goods lying between itand the lip b of the plate B. The arm g is provided with a smallprojection or hook 9 which extends beneath the arm g and which thuslimits the expansion of the coil-spring 9, so that the said parts orarms will travel together during the greater part of their movement; butwhen thepressure of the needle-barprojection on the arm g of the lever Gcauses the stress of the said coil-spring to be overcome the said arm gwill continue to move downward to a slight extent after the movement ofthe arm has been arrested.

The creasing-arm b is lifted by one arm of a forked spring 7t, securedin place by the setscrew f, said spring having a second arm, the endportion 7b of which extends beneath the end of the operating arm orlever G, which has a rectangular end portion against which the portionIt of said spring bears, so as to serve to hold the lever either in theoperating position (shown in full lines in Fig. 3) orin the inoperativeposition (shown in dotted lines in said figure) when the said lever hasbeen raised to throw the creaser out of action.

Instead of making the operating-lever G of two rigid arms orparts, as g9 yieldingly connected, the said lever may consist of one rigid arm gand a spring-arm, as g consisting of a rather stiff piece of steel wire,as shown in Fig. 5.

Having thus described my invention, I

claim and desire to secure ent 1. In a sewing-machine tuck-creaser, thecombination with a presser-toot having a lateral extension or arm, as a,of a clamping capplate and housing overlying said arm, an adjustablebase-plate carrying the creasing devices, an adjustable guide having anopening through which the base-plate of the creasing devices extends andwhich base-plate is thus steadied by said guide, said base-plate andguide both having parts interposed between said lateral extension or armand said capplate and housing, a screw device for rigidly securing thesaid clamping cap plate and housing in place, and a vibratingoperatinglever for said creasing devices.

2. In a sewing-machine tuck-creaser, the combination with a presser-foothaving a lateral extension or arm, as a, provided at its end with anupturned lip, as at, having an aperture, a clamping cap-plate or housingE having at its rear end a lug or projection, as

by Letters Pat- 'e, entering said aperture, an adjustable baseplatecarrying the creasing devices which include a vibrating creasing-arm, anadjustable guide, said base-plate and guide both having parts interposedbetween said lateral extension or arm and said cap-plate and housing, ascrew device for rigidly securing the said cap-plate and housing inplace, and an operating-lever pivotally mounted on said foot andarranged transverse of the attachment, said operating-lever having ayielding part engaging said vibrating creasing-arm.

3. In a sewing-machine tuck-creaser, the combination with the framethereof and the creasing devices adjustably mounted on said frame andincludingavibratingcreasingarm, of an operating-lever for said arm andwhich lever is adapted to be moved to an inoperative position, and meansfor holding said lever in its inoperative position when it has beenthrown out of action.

4. In a sewing-machine tuck-creaser, the combination with the framethereof consisting of the foot A and the lateral extension or arm aintegral therewith, of the clamping capplate E extending lengthwise ofthe attachment and having downturned lips, as described, so as to serveas a housing, the adjustable base-plate B having a creasing-lip, thevibrating creasing-arm I) mounted on said base-plate, the transverselever G for operating said creasing-arm and having an upwardly-extendinginclined portion to be engaged by a projection on the needle-bar of themachine, said operating-lever having a yielding part engaging saidcreasing-arm, an adjustable guide, said base-plate and guide havingparts interposed between said lateral extension or arm and said plate E,a screw device for securing said cap-plate E in place, and a springforlifting the said vibrating arm after it has been depressed by thesaid operating-lever.

5. In a sewing-machine tuck-creaser, the

combination with the frame thereof, of the said spring g and the springh for lifting said vibrating creasing-arm.

6. In a sewing-machine tuck-creaser, the combination with the framethereof and the base plate B adjust-ably mounted on said frame andprovided with a creasing-lip and a vibrating creasing-arm, of anoperating-lever for said creasing-arm and which lever is adapted to bemoved to an inoperative position, and a forked spring one portion ofwhich serves to lift the said creasing-arm and the other portion ofwhich serves to retain the said operating-lever in its inoperativeposition.

7. In a sewing-machine tuck-creaser, the combination with the frameconsisting of the foot A and the lateral extension or arm a, of thebase-plate B carrying the creasing devices and having the steadying-arm17 overlying the said arm Ct, the guide D having the hooks or parts dengaging the said arm a,- the clamping cap-plate E overlying the saidarm 12 and the said hooks or parts 01, a screw device for securing saidcap-plate to said arm a, and operating means for the creasing de-'vices.

In testimony whereof I affix my signature in the presence of twowitnesses.

JOHN M. GREIST.

Witnesses:

W. J. SMITH,

L. A. BEEOHER.

